code: def main():
      logging.getLogger().setLevel(logging.INFO)
      parser = argparse.ArgumentParser(
          description="""Utility for compiling and testing MXNet easily"""
      )
      parser.set_defaults(command="use_menu_ui")
  
      subparsers = parser.add_subparsers(help="sub-command help")
      build_parser = subparsers.add_parser(
          "build", help="build with the specified flags from file"
      )
      build_parser.add_argument(
          "cmake_options",
          nargs="?",
          help="File containing CMake options in YAML",
      )
      build_parser.add_argument(
          "-v",
          "--venv",
          type=str,
          default=DEFAULT_PYENV,
          help="virtualenv dir",
      )
      build_parser.add_argument(
          "-p",
          "--pyexe",
          type=str,
          default=DEFAULT_PYTHON,
          help="python executable",
      )
      build_parser.set_defaults(command="build")
  
      menu_parser = subparsers.add_parser(
          "menu", help="jump to menu option #"
      )
      menu_parser.set_defaults(command="use_menu_ui")
      menu_parser.add_argument("choice", nargs=1)
  
      args = parser.parse_args()
      globals()[args.command](args)
      return 0
  
imports: import argparse
  import os
  import sys
  from subprocess import check_call
  import shlex
  from ci.util import retry, remember_cwd
  from typing import List
  from collections import OrderedDict
  import logging
  import yaml
  import shutil
label_desc: Use image node_id 9 for calling a global function with example usage: main() and returns: int